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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 26 — Sep. 10, 2013
  • pp: 6428–6438

Tunable focusing of sine-azimuthal wavefront modulated cosh-Gaussian beams by one spiral optical vortex

Wen Wang, Dawei Zhang, Xiumin Gao, Ruijin Hong, and Songlin Zhuang  »View Author Affiliations

Applied Optics, Vol. 52, Issue 26, pp. 6428-6438 (2013)

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Optical intensity distributions in the focal region play an important role in many optical systems. In this paper, the tunable focusing properties of linearly polarized hyperbolic-cosine-Gaussian beams with sine-azimuthal variation wavefront were investigated by adding a spiral optical vortex. It was found that the focal patterns can be altered very considerably by changing the charge number of the optical vortex under a different phase parameter that indicates the phase change frequency upon increasing the azimuthal angle. The symmetry of focal patterns also changes remarkably upon increasing the charge number. And some novel focal patterns may appear, including a multiple-peak array, wheel focal pattern, or swallow-tailed focal pattern.

© 2013 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Diffraction and Gratings

Original Manuscript: April 9, 2013
Revised Manuscript: July 24, 2013
Manuscript Accepted: July 24, 2013
Published: September 3, 2013

Wen Wang, Dawei Zhang, Xiumin Gao, Ruijin Hong, and Songlin Zhuang, "Tunable focusing of sine-azimuthal wavefront modulated cosh-Gaussian beams by one spiral optical vortex," Appl. Opt. 52, 6428-6438 (2013)

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